Electronic speedometers

[57 imposter]

My issue is with VDO and their electric speedometer. The first 10,000 miles the thing worked perfect then came cold weather. with temp.in the 20's and 30's if i didn't know better, I would swear the needle is trying to operate in oil. at 60MPH the needle will come up very slowly and get to 40 or 50 when I know the car is going 60. I have re-programed the thing till I'm sick of it and can't it to calibrate any closer than 10mph fast. and that has to be when the unit is good and warm. I guess the most irritating part is their complete lack of customer/tech. support. I have search wed sites and even called Summit racing cust service. They said they couldn't help but would try and get me a cust serv. number from VDO. When they got back to me they said they couldn't find one either. I'm about ready to give it to the guy i know that can throw the farthest and replace it with another one, although I have no reason to believe it would be any better and to go to another brand,will require a complete new gage package. Anybody else having trouble with VDO or is it just me?